A laboratory ph analyser

Abstract

The utility model relates to the technical field of acid -base degree analyser, disclose a kind of laboratory PH acid -base degree analyser, including host computer, host computer is connected to detection probe, probe is equipped on detection support, it is washed by washing device, the fixed cylinder of detection support is fixed in the center of fan-shaped carrier plate, outer wall has vertical groove and the spiral groove of intercommunication, install micro electric push rod, push rod top is connected lifting rotating column bottom by bearing, lifting rotating column can slide and rotate on fixed cylinder, lower slide axle slides in vertical groove and spiral groove;Top connecting rod end clamping groove is connected with detection probe, measured container and waste water container are respectively located probe horizontal maximum rotation angle both ends directly below.The utility model realizes that probe is automatically rotated from waste water container top to measured container top and is inserted into solution by descending, replaces manual pickup, avoids hand direct contact, reduces bacterial pollution risk;Prevent forgetting or not completely washing, applicable to high-frequency detection scene.

Description

Technical Field

[0001] This utility model relates to the field of pH analyzer technology, and in particular to a laboratory pH analyzer. Background Technology

[0002] In laboratory testing, pH analyzers are commonly used instruments primarily for accurately measuring the acidity or alkalinity of solutions. They are fundamental testing tools in industries such as industry, medicine, environmental protection, and food. By quantifying pH values, they help people quickly determine the properties of solutions and thus make decisions. Currently, the testing process for pH analyzers in laboratories largely relies on manual operation. Before testing, the probe must be manually removed from its placement position and inserted into the solution in the container to be tested. After testing, the probe must be manually cleaned with a cleaning bottle.

[0003] When people directly touch the detection probe, bacteria from their hands can easily adhere to the probe surface, potentially contaminating the test solution or affecting the accuracy of subsequent test results. After testing, the probe needs to be manually cleaned, which is labor-intensive in high-frequency testing scenarios, and it is easy to forget to clean it, leading to cross-contamination of subsequent test samples by residual solution on the probe surface. Utility Model Content

[0004] The purpose of this invention is to provide a laboratory pH analyzer that solves the problems of manual handling and cleaning of the detection probe, avoiding direct contact between the hands and the detection probe, preventing the risk of bacterial contamination on the probe surface, and addressing issues such as forgetting to clean or incomplete cleaning. It also reduces the repetitive labor intensity of operators in high-frequency detection scenarios.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A laboratory pH analyzer includes a main unit with an externally electrically connected detection probe. The detection probe is mounted on a detection bracket, which is situated on a carrier plate. The carrier plate has a fan-shaped structure and holds a test container and a wastewater container. A cleaning device for cleaning the detection probe is installed above the wastewater container. The detection bracket includes a fixed cylinder, a vertical groove, a spiral groove, a miniature electric push rod, a lifting and rotating column, a sliding shaft, a connecting rod, and a locking slot. The fixed cylinder is fixed at the center of the fan-shaped carrier plate, and its outer wall has an opening... A vertical groove is formed, with a spiral groove at its top. The spiral groove has a rotation angle of 60°. A miniature electric actuator is fixedly installed inside the fixed cylinder. The top output end of the miniature electric actuator is mounted to the bottom of the lifting rotating column via a bearing. The lifting rotating column slides up and down inside the fixed cylinder and can rotate. A sliding shaft is radially fixed to the lower part of the outer wall of the lifting rotating column, and the sliding shaft slides within the vertical groove and spiral groove. A horizontal connecting rod is fixed to the top of the lifting rotating column, and a slot is integrally formed at the end of the connecting rod. The detection probe engages with the slot. The positions of the container to be tested and the wastewater container are directly below the two ends of the detection probe at its maximum horizontal rotation angle.

[0006] Preferably, the cleaning device includes a water bottle, a micro water pump, a cleaning bracket, a cleaning ring, fixed nozzles, and a notch. The water bottle is located on a carrier plate, and the micro water pump is installed on the top of the water bottle. The cleaning bracket is vertically fixed on the carrier plate, and a horizontal cleaning ring is fixed on the top of the cleaning bracket. The micro water pump is connected to the water bottle and the cleaning ring tube. The cleaning ring is a hollow structure with multiple fixed nozzles arranged within its circumference. The cleaning ring is not a complete circular structure; a notch is opened at one end, and the notch is located on the movement path of the detection probe.

[0007] Preferably, the bottom of the cleaning ring is connected to an extension tube, and a movable nozzle is fixedly installed at the bottom of the extension tube, with the movable nozzle facing the bottom electrode of the detection probe.

[0008] Preferably, the extension tube is a stainless steel corrugated tube. It allows for manual extension and retraction of its length and a fixed angle, ensuring the movable nozzle is precisely oriented towards the electrode cleaning position.

[0009] Preferably, the cleaning bracket includes a fixed column, a lifting column, a positioning hole, and a screw pin. The fixed column is fixed vertically to the carrier plate. A lifting column that slides up and down is installed inside the fixed column. The top of the lifting column is fixed to the cleaning ring. A circular positioning hole is opened on the outer wall of the lifting column. A screw pin is threaded to the outer wall of the fixed column. The inner end of the screw pin is inserted into the positioning hole.

[0010] Preferably, the carrier plate has two container positioning slots, and the container to be tested and the wastewater container are respectively located in the two container positioning slots.

[0011] Preferably, a secondary carrier plate is integrally formed on the outer side of the carrier plate, and the water bottle is located on the secondary carrier plate.

[0012] This utility model has the following beneficial effects: 1. Through the combination structure of miniature electric push rod, lifting rotating column and sliding shaft sliding along the spiral groove of vertical groove box, the detection probe is automatically moved from above the wastewater container to above the container to be tested and then lowered to insert into the solution, replacing manual handling, completely avoiding direct contact between the hand and the detection probe, and reducing the risk of bacterial contamination; 2. An automatic cleaning device consisting of a miniature water pump, a cleaning ring, a fixed nozzle, an extension tube, and a movable nozzle is set up. After the test is completed, the test probe automatically resets to the center of the cleaning ring. The outer wall of the probe and the bottom electrode can be cleaned in all directions by starting the cleaning button, avoiding the problem of manual forgetting to clean or incomplete cleaning. It is especially suitable for high-frequency testing scenarios. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the appearance and structure of this utility model; Figure 2 This is a schematic diagram of the external structure of the detection bracket of this utility model; Figure 3 This is an assembly diagram of the fixed cylinder, miniature electric push rod, and lifting rotating column of this utility model; Figure 4 This is a schematic diagram of the cleaning device of this utility model; Figure 5 This is a schematic diagram of the cleaning bracket, extension tube, and movable nozzle structure of this utility model; Icons: 1. Main unit; 2. Detection probe; 21. Container positioning slot; 22. Sub-carrier plate; 3. Detection bracket; 31. Fixed cylinder; 32. Vertical groove; 33. Spiral groove; 34. Miniature electric push rod; 35. Lifting and rotating column; 36. Sliding shaft; 37. Connecting rod; 38. Slot; 4. Carrier plate; 5. Container to be tested; 6. Wastewater container; 7. Cleaning device; 71. Water bottle; 72. Miniature water pump; 73. Cleaning bracket; 731. Fixed column; 732. Lifting column; 733. Positioning hole; 734. Tightening pin; 74. Cleaning ring; 75. Fixed nozzle; 76. Notch groove; 77. Extension tube; 78. Movable nozzle. Detailed Implementation

[0014] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] like Figure 1-5 As shown, in this embodiment, a laboratory pH analyzer includes a main unit 1. A controller is installed inside the main unit 1, and a display screen and various control buttons are installed outside the main unit 1 housing. The display screen and various control buttons are electrically connected to the controller. The control buttons include a start control button, a reset control button, and a cleaning control button. A detection probe 2 is electrically connected to the main unit 1. The detection probe 2 is mounted on a detection bracket 3. The detection bracket 3 is located on a carrier plate 4. The carrier plate 4 has a fan-shaped structure, and a test container 5 and a wastewater container 6 are placed on it. A cleaning device 7 for cleaning the detection probe 2 is installed above the wastewater container 6. The detection bracket 3 includes a fixed cylinder 31, a vertical groove 32, a spiral groove 33, a miniature electric push rod 34, a lifting and rotating column 35, a sliding shaft 36, a connecting rod 37, and a slot 38. The fixed cylinder 31 is fixed to... At the center of the fan-shaped carrier plate 4, the outer wall of the fixed cylinder 31 has a vertical groove 32. The top of the vertical groove 32 is connected to a spiral groove 33, which has a rotation angle of 60°. A miniature electric push rod 34 is fixedly installed inside the fixed cylinder 31. The miniature electric push rod 34 is electrically connected to the controller of the host 1. The top output end of the miniature electric push rod 34 is installed at the bottom of the lifting rotating column 35 through a bearing. The lifting rotating column 35 slides up and down inside the fixed cylinder 31 and can rotate. A sliding shaft 36 is radially fixed to the lower part of the outer wall of the lifting rotating column 35. The sliding shaft 36 slides within the vertical groove 32 and the spiral groove 33. A horizontal connecting rod 37 is fixed to the top of the lifting rotating column 35. The end of the connecting rod 37 has an integrally formed slot 38, which is made of plastic material with plastic deformation. The detection probe 2 engages with the slot 38. The positions of the container to be tested 5 and the wastewater container 6 are directly below the two ends of the detection probe 2 at the maximum horizontal rotation angle.

[0017] Specifically, after activating the detection control button on the main unit 1, the output end of the micro electric push rod 34 descends, and the sliding shaft 36 slides along the spiral groove 33 to the bottom of the vertical groove 32. The lifting and rotating column 35 drives the detection probe 2 from above the wastewater container 6 to above the test container 5, and then descends, so that the bottom of the detection probe 2 is inserted into the solution in the test container 5 for detection. The automatic movement and detection of the detection probe 2 is achieved by activating the control button, replacing the manual operation process. This avoids bacterial contamination caused by direct contact between the detection probe 2 and the hands, and optimizes the convenience and standardization of the detection. After the detection is completed by observing the detection value on the display screen with the naked eye, the reset control button on the main unit 1 is activated, the micro electric push rod 34 is activated, and the detection probe 2 is reset to above the wastewater container 6. The liquid on the detection probe 2 is cleaned by the cleaning device 7 for the next detection. The cleaning liquid flows down the detection probe 2 into the wastewater container 6 for collection.

[0018] Furthermore, the internal controller of the host 1, which is a microcontroller, sends a speed adjustment command to the drive module of the micro electric push rod 34. During the ascent of the probe 2 from the solution in the test container 5, the pushing speed of the extension rod of the micro electric push rod 34 is reduced so that the liquid attached to the probe 2 can drip back into the test container 5. This avoids the test liquid dripping from the probe 2 onto the carrier plate 4 during the process of the probe 2 moving to the wastewater container 6, which would cause inconvenience in cleaning.

[0019] The cleaning device 7 includes a water bottle 71, a miniature water pump 72, a cleaning bracket 73, a cleaning ring 74, a fixed nozzle 75, and a notch 76. The water bottle 71 contains purified water and is located on the carrier plate 4. The miniature water pump 72 is mounted on the top of the water bottle 71 and is electrically connected to the controller of the main unit 1. The cleaning bracket 73 is vertically fixed on the carrier plate 4, and a horizontal cleaning ring 74 is fixed on the top of the cleaning bracket 73. The miniature water pump 72 is pipe-connected to the water bottle 71 and the cleaning ring 74. The water inlet of pump 72 is connected to the inside of water bottle 71 via a hose, and the water outlet is connected to cleaning ring 74 via a hose. The cleaning ring 74 is a hollow structure with multiple fixed nozzles 75 arranged around its circumference. The fixed nozzles 75 are tilted downwards and face the center of the cleaning ring 74 so as to be aligned with the outer wall of the detection probe 2 for cleaning. The cleaning ring 74 is not a complete circular structure; one end has a notch 76. The notch 76 is on the movement path of the detection probe 2 so that the detection probe 2 can move to the center of the cleaning ring 74.

[0020] Specifically, after the detection probe 2 moves to the center of the cleaning ring 74, the cleaning control button is pressed. The controller then starts the micro water pump 72, which draws purified water from the water bottle 71 and outputs it through the fixed nozzle 75 to clean the outer wall of the detection probe 2. The liquid adhering to the outer wall of the detection probe 2 flows into the wastewater container 6. The controller has a built-in timer that starts counting when the micro water pump starts. When the preset cleaning time is reached, the timer sends a stop signal, and the controller cuts off the power to the micro water pump. Automatic cleaning replaces manual cleaning of the detection probe 2, which is especially suitable for high-frequency detection scenarios. It reduces the repetitive labor intensity of operators, avoids human error caused by forgetting to clean during manual cleaning, ensures that the detection probe is always clean, guarantees the accuracy of the detection results, and reduces the error rate.

[0021] The bottom of the cleaning ring 74 is connected to an extension tube 77, and a movable nozzle 78 is fixedly installed at the bottom of the extension tube 77, with the movable nozzle 78 facing the bottom electrode of the detection probe 2.

[0022] Specifically, the extension tube 77 is connected to the cleaning ring 74, and water is sprayed out from the movable nozzle 78 below to clean the electrode at the bottom of the detection probe 2, so that the detection probe 2 is cleaned more thoroughly.

[0023] The extension tube 77 is a stainless steel corrugated tube. It can be manually extended and retracted, and the angle can be fixed, so that the movable nozzle 78 is precisely oriented towards the electrode cleaning position.

[0024] The cleaning bracket 73 includes a fixed column 731, a lifting column 732, a positioning hole 733, and a screw pin 734. The fixed column 731 is fixed vertically to the carrier plate 4. The lifting column 732, which slides up and down, is installed inside the fixed column 731. The top of the lifting column 732 is fixed to the cleaning ring 74. A circular positioning hole 733 is opened on the outer wall of the lifting column 732. A screw pin 734 is threadedly connected to the outer wall of the fixed column 731. The inner end of the screw pin 734 is inserted into the positioning hole 733.

[0025] Specifically, by manually adjusting the height of the lifting column 732, the cleaning ring 74 is adjusted to a position suitable for cleaning the detection probe 2, thus avoiding incomplete cleaning of the outer wall of the detection probe 2 due to the cleaning ring 74 being too low.

[0026] The carrier plate 4 has two container positioning slots 21, and the test container 5 and the wastewater container 6 are respectively located in the two container positioning slots 21 to ensure that the test container 5 and the wastewater container 6 are placed in accurate positions.

[0027] The carrier plate 4 is integrally formed with a sub-carrier plate 22, and the water bottle 71 is located on the sub-carrier plate 22 for easy placement of the water bottle 71.

[0028] The working principle of this utility model is as follows: When the detection control button of the main unit 1 is pressed, the internal controller of the main unit sends a descent command to the micro electric push rod 34. Its output end drives the lifting rotating column 35 to slide downward along the inner wall of the fixed cylinder 31 through the bearing. The sliding shaft 36 on the outer wall of the lifting rotating column 35 slides along the spiral groove 33 of the fixed cylinder 31, pushing the lifting rotating column 35 to rotate 60°. Through the horizontal connecting rod 37, it drives the detection probe 2 to rotate from above the wastewater container 6 to above the container to be tested 5. The micro electric push rod 34 continues to descend, and the sliding shaft 36 slides from the spiral groove 33 into the bottom of the vertical groove 32. The lifting rotating column 35 stops rotating, and the detection probe 2 descends vertically, inserting its bottom into the solution of the container to be tested 5 to detect the pH value. The detection value is displayed on the display screen of the main unit 1 in real time.

[0029] After manually observing the display screen to complete the test, pressing the reset button sends a rising command to the micro electric push rod 34. The controller then uses a speed adjustment command to slow the rising speed of the micro electric push rod 34 as the probe 2 leaves the test solution, causing the liquid adhering to the probe surface to drip back into the test container 5. As the lifting and rotating column 35 rises, the sliding shaft 36 rises along the vertical groove 32 to the inlet of the spiral groove 33, then slides again along the spiral groove 33, causing the lifting and rotating column 35 to rotate 60° in the opposite direction. Through the connecting rod 37, the probe 2 is rotated from above the test container 5 back above the wastewater container 6, finally resetting to the center of the cleaning ring 74.

[0030] After the detection probe 2 is reset to the center of the cleaning ring 74, pressing the cleaning control button sends a start command to the micro water pump 72. The micro water pump 72 draws purified water from the water bottle 71, delivers it to the cleaning ring 74 through a hose, and then sprays it out from the fixed nozzle 75 inside the cleaning ring 74, rinsing the outer wall of the detection probe 2. The extension tube 77 connected to the bottom of the cleaning ring 74 delivers water to the movable nozzle 78 for precise cleaning of the electrode area, ensuring thorough removal of residual liquid. The controller has a built-in timer that starts counting when the micro water pump 72 starts. After the preset cleaning time is reached, a stop signal is sent, and the micro water pump 72 shuts down. The cleaning solution flows along the detection probe 2 into the wastewater container 6, achieving centralized collection of waste liquid for subsequent treatment.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laboratory pH analyzer, comprising a host computer (1), an external detection probe (2) is connected to the host computer (1), characterized in that, The detection probe (2) is mounted on the detection bracket (3), the detection bracket (3) is located on the carrier plate (4), the carrier plate (4) is a fan-shaped structure, and the container to be tested (5) and the wastewater container (6) are placed on it. A cleaning device (7) for cleaning the detection probe (2) is installed above the wastewater container (6). The detection bracket (3) includes a fixed cylinder (31), a vertical groove (32), a spiral groove (33), a miniature electric push rod (34), a lifting and rotating column (35), a sliding shaft (36), a connecting rod (37), and a slot (38). The fixed cylinder (31) is fixed at the center of the fan-shaped carrier plate (4). The outer wall of the fixed cylinder (31) has a vertical groove (32), and the top of the vertical groove (32) is connected to the spiral groove (33). The rotation angle of the spiral groove (33) is 60°. The miniature electric push rod (34) is fixedly installed inside the fixed cylinder (31). The top output end of the miniature electric push rod (34) is connected to the shaft. The lifting and rotating column (35) is installed at the bottom. The lifting and rotating column (35) slides up and down inside the fixed cylinder (31) and can rotate. A sliding shaft (36) is fixed radially on the lower part of the outer wall of the lifting and rotating column (35). The sliding shaft (36) slides in the vertical groove (32) and the spiral groove (33). A horizontal connecting rod (37) is fixed at the top of the lifting and rotating column (35). A slot (38) is integrally formed at the end of the connecting rod (37). The detection probe (2) is engaged with the slot (38). The positions of the container to be tested (5) and the wastewater container (6) are directly below the two ends of the maximum horizontal rotation angle of the detection probe (2).

2. The laboratory pH analyzer according to claim 1, characterized in that, The cleaning device (7) includes a water bottle (71), a micro water pump (72), a cleaning bracket (73), a cleaning ring (74), a fixed nozzle (75), and a notch (76). The water bottle (71) is located on the carrier plate (4). The micro water pump (72) is installed on the top of the water bottle (71). The cleaning bracket (73) is vertically fixed on the carrier plate (4). The cleaning ring (74) is fixed horizontally on the top of the cleaning bracket (73). The micro water pump (72) is connected to the water bottle (71) and the cleaning ring (74) through a pipe. The cleaning ring (74) is a hollow structure, and multiple fixed nozzles (75) are arranged in the circumference. The cleaning ring (74) is not a complete circular structure. A notch (76) is opened at one end. The notch (76) is on the movement path of the detection probe (2).

3. A laboratory pH analyzer according to claim 2, characterized in that, The bottom of the cleaning ring (74) is connected to an extension tube (77), and a movable nozzle (78) is fixedly installed at the bottom of the extension tube (77). The movable nozzle (78) faces the bottom electrode of the detection probe (2).

4. A laboratory pH analyzer according to claim 3, characterized in that, The extension tube (77) is a stainless steel corrugated tube that can be manually extended and retracted and can be fixed at an angle so that the movable nozzle (78) is precisely oriented toward the electrode cleaning position.

5. A laboratory pH analyzer according to claim 2, characterized in that, The cleaning bracket (73) includes a fixed column (731), a lifting column (732), a positioning hole (733), and a screw pin (734). The fixed column (731) is vertically fixed to the carrier plate (4). The lifting column (732) that slides up and down is installed inside the fixed column (731). The top of the lifting column (732) is fixed to the cleaning ring (74). A circular positioning hole (733) is opened on the outer wall of the lifting column (732). The screw pin (734) is threadedly connected to the outer wall of the fixed column (731). The inner end of the screw pin (734) is inserted into the positioning hole (733).

6. A laboratory pH analyzer according to claim 1, characterized in that, The carrier plate (4) has two container positioning slots (21), and the test container (5) and the wastewater container (6) are respectively located in the two container positioning slots (21).

7. A laboratory pH analyzer according to claim 2, characterized in that, The carrier plate (4) has an integrally formed sub-carrier plate (22), and the water bottle (71) is located on the sub-carrier plate (22).

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